From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Bastian Beischer Newsgroups: gmane.emacs.bugs Subject: bug#38199: 27.0.50; [Cairo] Display artifacts (small vertical colored bars) Date: Sat, 23 Nov 2019 14:03:11 +0100 Message-ID: References: <87eeybd12v.fsf@bastian-desktop.i-did-not-set--mail-host-address--so-tickle-me> <83tv7660w8.fsf@gnu.org> <83a78x4lkc.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="27483"; mail-complaints-to="usenet@blaine.gmane.org" Cc: 38199@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Nov 23 14:04:30 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1iYV5S-000745-9c for geb-bug-gnu-emacs@m.gmane.org; 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Sat, 23 Nov 2019 05:03:22 -0800 (PST) In-Reply-To: <83a78x4lkc.fsf@gnu.org> X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.51.188.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:172290 Archived-At: On Fri, Nov 15, 2019 at 8:59 AM Eli Zaretskii wrote: > > > From: Bastian Beischer > > Date: Thu, 14 Nov 2019 23:30:32 +0100 > > Cc: 38199@debbugs.gnu.org > > > > > Did you try to disable "advanced" or "optimization" features of your > > > display driver software? Or upgrade it to a newer version? The > > > artifacts your screenshot shows don't look like something Emacs could > > > produce. > > > > You are right: It could well be a cairo library or driver issue. I am > > using the default optimized builds from the Arch Linux x86_64 > > repository, which means: > > > > cairo: 1.17.2+17+g52a7c79fd-2 > > Xorg: 1.20.5-4 > > mesa: 19.2.3-2 > > linux: 5.3.11.1-1 > > > > My GPU is NVIDIA Geforce GTX 285 (nouveau kernel driver, combined with > > modesetting / glamor). Should I report a bug against cairo? > > Maybe; it could also be a bug in the NVIDIA drivers. So before > reporting a Cairo bug, I'd look at the settings of your video driver, > and if there are any "optimization" features there, try to disable > them. I have now confirmed the bug on a different PC with an Intel GPU. It persists when using modesetting and when using xf86-video-intel as drivers there. So I think it's unlikely that it is a bug in the driver. I will now open a cairo issue.